<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="author" content="wangbo">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>三角形</title>
  <style>
    /* 边框设置的3角 */
    div{
      width: 10px;
      height: 12px;
      /* background-color: turquoise; */
      text-align: center;
      line-height: 10px;      
      /* transition: all 2s; */
      transform: rotate(90deg);
    }
    /* div:hover{} */
  </style>
</head>
<body>
  <div>&gt;</div>
  <p>V</p>
</body>
</html>